Improvement in steam vacuum-pumps



Patented sep.24,1872.`

S nul m U Dl m u U 0 C a I.. LV. HA mx a', Bq- H. .n C.| .TT n e m e V 0 .I p5 2 m,5 m `nw N ma @nm www ab UNITED STATES CHARLES H. HALL, OF NEW YORK, N. Y.

IMPROVEMENT IN STEAM VACUUM-PUMPS.

Specification forming part of Letters Patent No. 131,525, dated September 24, 1872.

CAsE K.

To. all whom it may concern Be it known that I, CHARLES H. HALL, of New York city, in the State of New York, have invented a certain Improvement in Steam Pumping Apparatus,.of which the following is a specification:

The invention relates to that class of pumping apparatus in which the steam is admitted into the same chamber or chambers with the water, and presses upon the surface thereof. The working parts are small relatively to the capacity for pumping, and the apparatus constitutes an eiicient pumping means, operating rapidly and reliably. I employ strong chambers provided with 'valves for admitting water and holding it against its return, and also with complete its filling before its mate is emptied,

and the change ofthe steam-valves is effected automatically on the completion of the emptying of the discharging-chamber.

The following is a full and exact description of what I consider the best means of carrying into effect one form of the invention. The accompanying drawing forms a part of this specification.

. Figures 1 and` 2 represent this form, in which the gravity of weights operates according as they are partially supported by the water or are left unsupported by the sinking of the water. Fig. l is a vertical section, and Fig. 2 is a horizontal section.

Gr is a lever, turning upon a pivot, g, and supporting the rod Fl F2, on which are fined the steam-valves e1 e2. When one sinks to its seat it necessarily pulls the other open. On the lower end of each rod F1 F2 is a weight of cast-iron or other suitable material. The weight M1 is suspended from the rod F1, and the Weight M2 from the rod F2. When the surface of the water sinks by the expulsion of the water to such a level as-exposes a large proportion of the weight Ml above the surface, the opposite weight M2 will be entirely immersed by the rise of the water over it to fill the chamber A2. Under these conditions the gravity of the weight Ml will be felt in proportion as the water falls and exposes a larger proportion of its mass above the water-line. As the water-level rapidly sinks the effect of the gravity contributes largely to pull the valve el into the shut position and to open the valve c2. I have found by experiment that the loss of steam is slight when worked in this. manner in uncoated vessels, but I propose, in ordinary practice, to coat the interior of each chamber with japan varnish or with red lead and oil, or with a solution of rubber, or the like, to serve as a durable non-conductor of heat. I can make the chambers and the several connections of lead, to pump acids, or of glass or other material for any special uses requiring such.

What I claim as my invention is as follows:

In com bination` with the chambers A1 A2, suitable water induction and eduction means, and provisions for receiving steam intermittently into each, I claim the floats Ml M2, ararranged to slide on the rods F1F2,connected to the steam-valves e162, and to each other by the -lever G, all mounted within the steamspace to induce or aid in inducing the change of condition in the apparatus, as herein specified. Y

In testimony whereof I have hereunto set my hand this 18th day of May, 1872, in the presence of two subscribing witnesses.

-' C. H. HALL.

Witnesses:

ARNOLD HEMANN, W. U. DEY. 

